An important feature of digital cameras is battery life, the number of shots that can be taken

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An important feature of digital cameras is battery life, the number of shots that can be taken before the battery needs to be recharged. The file Cameras contains the battery life of 11 subcompact cameras and 7 compact cameras. (Data extracted from "Cameras," Consumer Reports, July 2012, pp. 42-44.)
a. Is there evidence of a difference in the variability of the battery life between the two types of digital cameras? (Use a = 0.05.)
b. Determine the p-value in (a) and interpret its meaning.
c. What assumption about the population distribution of the two types of cameras is necessary in (a)? Is the assumption valid for these data?
d. Based on the results of (a), which t test defined in Section 10.1 should you use to compare the mean battery life of the two types of cameras? Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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Statistics For Managers Using Microsoft Excel

ISBN: 772

7th Edition

Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat

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